Charles william thompson



(No Model.) V

C. W. THOMPSON.

y GATE. No. 456,260. Patented July'Zl, 1891.

III* I $4 v (7h03. W Thonpgan NITnD STATES PATENT FFICE.

GATE.

SPECIFICATION forming vpart of Letters Patent No. 456,260, dated July21, 1891.

Application filed -Marcli 4, 1891. Serial No. 383,776. (No model.)

, is connected by suitable connecting devices With a rock-shaft havingan upwardly-extend ing bail or Wheel-iron lying in the path of thepassing vehicles, said rock-shaft serving to impart a swinging movementto the gate, and

the rock-shaftbeing retained in and restored to its normal positionafter operation by the use of a spring. In my previous patent, to whichreference has above been made, the said rock-shaft is connected with oneend `of a flat leaf-spring, the other end of which isv connected with afixed point of attachment.

My present invention has for its object to provide an improved springfor actuating the rock-shaft which shall be simple in construction andeflicientin operation; and the invention resides particularly in themeans for retaining the bail or wheel-iron in operative position andrestoring the same to the normal position after operation; and itconsists in the improved construction and arrangementof details, whichWill be hereinafter fully described, and particularly pointed` out inthe claims.

In the drawings hereto annexed, Figure l is a perspective view of therock-shaft and the spring for operating the same which constitutes myinvention. Fig. 2 is a longitudinal sectional View of the same. Fig. l3is a vertical transverse sectional view. Fig. 4 is a perspective detailview of one of the lugs forming part of the invention.

Like numerals of reference indicate like parts in all the figures.

l designates a sill or base which is provided with bearings for therock-shaft 2, having the upwardly-extending bailY or wheeliron 3.

4 designates a spring Which is coiled upon the rock-shaft and havingprojecting ends 5 5. This spring is arranged directly above a recess 6,formed in the sill or base, and the projecting ends 5 of the spring 4rest upon the upper edges of said recess. Suitably secured -upon therock-shaft 2, adjacent to the spring` ent invention and has not beenillustrated in the drawings hereto annexed,it being understood that myinvention is applicable to a great variety of gatesot differentconstruction. n operation the wheel-iron is depressed by the Wheels orvehicles passing over the same, thus oscillating the rock-shaft, whichimmediately after the passage of such vehicle is restored to its normalposition by the action of the spring. This device is exceedingly simplein construction and permits of the spring being easily adjusted or itstension regulated when ever it shall be desired to do so. Having thusdescribed' my invention, what I claim is` 1. In a device of the classdescribed, the combination of the rock-shaft having anupwardly-extending bail or wheel-iron, a spring coiled upon saidrock-shaft and having outwardly-extending arms, and collars secured tosaid rock-shaft and having lugs extending laterally under the ends orarms of said spring. substantially as and for the purpose set forth. L2.The combination of the rock-shaftv having an upwardly-extendin g bail orWheel-iron, a spring coiled upon said shaft and havingoppositely-extending arms, and collars having set-screws whereby theyare mounted adjustably upon the rock-shaft adjacent to the spring andprovided with lugs extending laterally under the ends of the latter,substanytially as set forth.

3. The combination ot a sill having a recess, the rook-shaft mountedupon the sill and llaving,r an upwardly-extending bail or Wheel-iron,`

a spring coiled upon the shaft above the re- 5 cess in the sill andhaving oppositely-extending arms resting upon the upper edges of thelatter, the collars secured adj ustably adjacent to the ends of thespring, and the lugs extending from said collars laterally under

